I. Units of Measurement (p )

Slides:

Advertisements

Similar presentations

Standards of Measurement Units and Standards 1.Standards – exact quantity that people agree to use for comparison 2.SI – standard system of.

Advertisements

Ch. 2 - Measurement I. Units of Measurement (p.34-45)

Units of Measurements Objectives: -Name SI units for length, mass, time, volume, and density -Perform density calculations.

Measurement I. Units of Measurement  Number vs. Quantity  SI Base Units & Prefixes  Derived Units  Density Calculations.

Quantitative information (qualitative data would be descriptions of your observations). Measurements represent quantities (something that has magnitude,

Standards of Measurement Section 1-2. Units and Standards Units must be included in order for a measurement to make sense.Units must be included in order.

SI Measurement Le System international d’Unites Internationally agreed – not 75, 000 –Meters not miles –Liters not gallons.

SI Units.  Students know how to… ◦ convert between °C - °K ◦ Analyze situations/solve problems combining and applying concepts.

Metric Review. International System of Units (SI) Base of 10 1 meter = 100 centimeters=1000 millimeters Standard Units: -Mass = gram (g) -Length = meter.

The Metric System Is used in nearly every country around the world. The United States of America doesn’t use the metric system for it’s primary measurement.

Bell-ringer You are driving in your car down the interstate (70 mph) to Tuscaloosa to watch the University of Alabama crush the Tennessee Volunteers. It.

Standards of Measurement

Chapter 2 – Section 2 Suggested Reading Pages 33-42

The Metric System Objective: Identifying what units are used for different measurements and how to convert measurements.

Units of Measurement SI – Le Systeme International d’Unites AKA: the Metrics System.

Metric Base Units Meter (m) – length Kilogram (kg) – mass Kelvin (K) – temperature Second (s) – time Mole (mol) – amount of substance.

Aim: What is mass and volume and how are they measured? Homework: 1. Name the quantity measured by each of the following SI units and give the SI symbol.

Metric System. SI System Standard International System of measurement – metrics Has seven base units and many other units derived from these seven.

CHAPTER 1, SECTION 2 Standards of Measurement. IS AN EXACT QUANTITY THAT PEOPLE AGREE TO USE TO COMPARE MEASUREMENTS WHY WOULD A STANDARD BE IMPORTANT?

WARM UP 1.List the steps of the scientific method. 2.Write one sentence about whether theories or laws are better, and why.

Chapter 2 Measurements and Calculations

Scientific Measurement

I. Using Measurements (p )

Unit 2. Measurement This lesson is 8 days long.

Lesson 2.2 Units of Measurements.

Chapter 3 Scientific Measurement 3.2 Units of Measurement

Basic Science Measurement and Metrics

Chapter 2 Preview Objectives Units of Measurement SI Measurement

II. Units of Measurement (p )

UNITS & DIMENSIONAL ANALYSIS (conversions)

Measures of Central Tendency Review

Introduction: Matter and Measurement

Measuring Matter Ch. 1 Sec. 4 Measurement.

A. Number vs. Quantity Quantity - number + unit UNITS MATTER!!

II. Units of Measurement (p )

Measurement I. Units of Measurement Number vs. Quantity

Ch. 1- Measurement I. Units of Measurement Number vs. Quantity

CH. 2 - MEASUREMENT.

The Measurement System of Science

MEASUREMENT I. Units of Measurement.

INTERNATIONAL SYSTEM (SI) OF MEASURE

MEASUREMENT Units of Measurement C. Johannesson.

Ch. 2 - Measurement I. Units of Measurement Number vs. Quantity

Metric Base Units Meter (m) – length Kilogram (kg) – mass

Dimensional Analysis, Significant Figures, & the Metric System

Metrics & SI Units.

Measurement I. Units of Measurement Number vs. Quantity

Chapter 2 Measurements.

Measurement – The Metric System

Chapter 3 Scientific Measurement 3.2 Units of Measurement

Measurement I. Units of Measurement Number vs. Quantity

II. Units of Measurement (p. 12)

Chapter 1 The Nature of Science 1.2 Standards of Measurement

Intentions for success:

Making Measurements.

Measurements and Calculations

Ch. 2 - Measurement I. Units of Measurement (p.34-45)

Measurement I. Units of Measurement Number vs. Quantity

Measurement Units of Measurement Number vs. Quantity

Measurements, Conversions & Dimensional Analysis

Measurement and Chemistry.

II. Units of Measurement

Measurements and Calculations

Measurement I. Units of Measurement (p.34-45) Number vs. Quantity SI Base Units & Prefixes Derived Units Density Calculations.

Presentation transcript:

I. Units of Measurement (p. 33 - 39) CH. 2 - MEASUREMENT I. Units of Measurement (p. 33 - 39) Le System International d Unites -- International System of Units (SI) Some non-SI units used (liter, gram)

A. Number vs. Quantity Quantity - number + unit UNITS MATTER!! Quantity represents magnitude, size, amount Unit represents how quantity is measured UNITS MATTER!!

B. SI Units Quantity Symbol Base Unit Abbrev. Length l meter m Mass m kilogram kg Time t second s Go through each base unit and what represented. Use overhead trans. Temp T kelvin K Amount n mole mol

B. SI Units Prefix Symbol Factor mega- M 106 kilo- k 103 BASE UNIT --- 100 deci- d 10-1 centi- c 10-2 Go through, use overhead transp. Discuss various objects and get suggestions of which would be the best unit to measure Mouse Car Distance to KC Amount of water in pool Distance to Mars/Moon Mass of elephant Size of bacteria Figure 2-4: determine width of foil ( work on uncertainty of measurements) milli- m 10-3 micro-  10-6 nano- n 10-9 pico- p 10-12

C. Mass vs Weight Mass -- amount of “stuff” with volume that is compared to a standard. Weight -- effect of gravity on mass. Balance measures mass by “canceling” effect of gravity. Scale measure weight & gravity. Which one changes? Where?

M V D = D. Derived Units 1 cm3 = 1 mL 1 dm3 = 1 L Combination of base units. Volume (m3 or cm3) length  length  length 1 cm3 = 1 mL 1 dm3 = 1 L D = M V Density demo: p. 37 (Dancing raisins) Explain observation. Many derived units (see table/transp. Pg. 36) Area, volume, density, molar mass will be common used Density (kg/m3, g/cm3, or g/ml) mass per volume

E. Density Mass (g) Volume (cm3)

F. Density V = 825 cm3 M = DV D = 13.6 g/cm3 M = (13.6 g/cm3)(825cm3) An object has a volume of 825 cm3 and a density of 13.6 g/cm3. Find its mass. GIVEN: V = 825 cm3 D = 13.6 g/cm3 M = ? WORK: M = DV M = (13.6 g/cm3)(825cm3) M = 11,200 g

G. Density D = 0.87 g/mL V = M V = ? M = 25 g V = 25 g 0.87 g/mL A liquid has a density of 0.87 g/mL. What volume is occupied by 25 g of the liquid? GIVEN: D = 0.87 g/mL V = ? M = 25 g WORK: V = M D V = 25 g 0.87 g/mL V = 29 mL